Without additional details it's hard to say what these items are.
But from past knowledge, if my memory serves me correctly, Data Miners were what are usually referred to as tracking cookies. To be sure, you could check the report/log and copy/paste the relevant parts here.
If cookies are the problem you should look in your browser settings for options to disable third party cookies.
Also you can use Spyware Blaster to prevent known bad ones from getting in. In addition to cookies, it also prevents known bad ActiveX controls from starting and has a host of other good protections.
More info on how to use it here